1986 AMC 8 第 16 题

先试着解答 1986 AMC 8 第 16 题,然后核对你的答案与精心整理的解答,解答来自 LIVE by Po-Shen Loh。你也可以参加完整限时模拟考试、查看全部 1986 AMC 8 解答,或核对答案。

所有题目均经美国数学协会(MAA)官方合法授权使用。

16.

一幅条形图显示了一家快餐连锁店在每个季节卖出的汉堡数量。但是,表示冬季销量的条形被一块污迹遮住了。如果这家连锁店全年汉堡销量中正好有 25%25\% 是秋季卖出的,那么冬季卖出多少百万个汉堡?
A bar graph shows the number of hamburgers sold by a fast food chain each season. However, the bar indicating the number sold during the winter is covered by a smudge. If exactly 25%25\% of the chain’s hamburgers are sold in the fall, how many million hamburgers are sold in the winter?
2.52.5
33
3.53.5
44
4.54.5
答案:A
知识点:百分数
小提示:
秋季销量 44 百万个是全年总量的 25%25\%,所以先求全年总量
The fall sales of 44 million are 25%25\% of the yearly total, so find the yearly total first
大提示:
从全年总量中减去春、夏、秋三季销量
Subtract the spring, summer, and fall sales from the yearly total
解答:
如果秋季 44 百万个是全年总量的 25%25\%,那么全年总量是 1616 百万个。
冬季销量是 16−(4.5+5+4)=2.516 - (4.5 + 5 + 4) = 2.5 百万个。
所以正确答案是 A。
If the fall sales of 44 million are 25%25\% of the yearly total, then the yearly total is 1616 million.
The winter sales are 16−(4.5+5+4)=2.516 - (4.5 + 5 + 4) = 2.5 million.
Thus, the correct answer is A .
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